abaxial

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abaxial

[ab′ak·sē·əl]
(biology)
On the opposite side to, or facing away from, the axis of an organ or organism.
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Petioles, rachises, and costae sparsely scaly; veins abaxially eglandular or sparsely and inconspicuously glandular; penultimate and ultimate segments often ascending; s.
Megalastrum platylobum is distinctive by hairs of mixed lengths along the pinna rachises abaxially.
Above the articulation, the epidermis is similar adaxially and abaxially, and it is formed by isodiametrical cells; stomata were observed only in the abaxial surface (Figs.
Pinna rachis scales clathrate; pinna rachises and costules abaxially evenly and densely pubescent by reddish hairs 0.
4 cm wide, obovate, round and apiculate at the apex, strongly carinate, abaxially totally covered by a ferrugineous indument (vs.
Leaves alternate, often clustered at the apex; sessile to petiolate, petioles, when present, commonly clasping; blades oblanceolate, lanceolate to obovate, coriaceous, venation pinnate, sub-palmate or sub-parallel, margin entire, sometimes revolute, glabrous to abaxially pubescent.
8 m long), laminae medially 1-pinnate-pinnatisect, and pinnae rachises abaxially with long (0.
stem scales blackish, clathrate, peltate, and comose, laminae abaxially with peltate scales, veins irregularly anastomosing, sori roundish and submarginal to marginal), Pi.
2 mm thick near the base, strongly coriaceous, distinctly channeled, green but the color completely obscured by a coarse and dense layer of cinereous-white trichomes abaxially and adaxially, trichomes with margins suberect, irregularly and shortly lacerate, giving a scurfy appearance to the blades, inconspicuously nerved abaxially, margins straight to slightly recurved, densely to subdensely spinose, spines narrowly triangular, flattened, straight to antrorse-uncinate, densely white-lepidote except for the castaneous glabrous apex, 2-4 mm long, 1.
Midrib abaxially prominent; vascular bundle single, simple.
1 mm thick near the base, thinly coriaceous mainly toward the base, suberect-arcuate, slightly channeled, dark green to slightly bronze colored, abaxially densely and coarsely white-lepidote with trichomes obscuring the color of the blade, finely nerved, adaxially subdensely white lepidote only at the base and glabrous toward the apex, apex long attenuate-caudate; margins laxly spinose, spines narrowly triangular, acicular and pale castaneous toward the apex, 0.